Plasmodium /(?)/

pl. Plasmodia

1. A jellylike mass of free protoplasm, without any union of amœboid cells, and endowed with life and power of motion. (Biol.)
2. A naked mobile mass of protoplasm, formed by the union of several amœbalike young, and constituting one of the stages in the life cycle of Mycetozoa and other low organisms. (Zool.)